Ocean Nutrition Marine Algaes 100g - 150gAn all natural, very nutritious supplement for all grazing fish, rich in vitamin C and easily digestible. An optimal food source for marine and freshwater herbivorous fish with softer mouth parts. Enhanced with natural garlic extract for increased acceptance by finicky eaters and improved immune functions. Tear off a piece of seaweed of approximately 5cm by 7cm for the average 200l community tank and place in the aquarium using Ocean Nutrition Seaweed